Expanding die and method of shaping containers

a beverage container and expansion die technology, applied in the direction of shaping tools, manufacturing tools, other domestic articles, etc., can solve the problems of increasing the manufacturing time and hence the cost associated with producing beverage containers, the container body cannot be easily incorporated into the inline process, and the transition is not adequately discriminated or differentiated. , to achieve the effect of uniform diameter and minimal transition
US7934410B2Active Publication Date: 2011-05-03ALCOA CORP CENT +1
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Patents(United States)
Current Assignee / Owner
ALCOA CORP CENT
Publication Date
2011-05-03

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Abstract

The present invention provides an expansion die for manufacturing containers including a work surface including a progressively expanding portion and a land portion; and an undercut portion positioned following the land portion of the work surface. The present invention further provides a process for manufacturing shaped containers including providing a container stock having a first diameter; expanding at least a portion of the container stock to a second diameter with at least one expansion die; and forming an end of the container stock to accept a container lid.
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Description

FIELD OF THE INVENTION

[0001] This invention relates to expansion dies for shaping beverage containers.BACKGROUND OF THE INVENTION

[0002] Beverage containers for various soft drinks or beer are generally formed by drawn and iron technology (i.e., the DI can), in which the container trunk (or side wall portion) and the container bottom are integrally formed by drawing and ironing a metallic sheet, such as an aluminum alloy sheet or a surface-treated steel sheet.

[0003] In the industry, these beverage containers are produced massively and relatively economically to substantially an identical shape. As the containers are produced substantially to an identical shape, they can not adequately be discriminated or differentiated from one another by their appearance. As the beverage containers are manufactured massively and relatively economically, there is a strong desire among beverage manufacturers for economical beverage containers with unique configurations to help differentiate their product...

Claims

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